kernel.git/net/sunrpc/xprtrdma, branch linux-4.5.y

Merge tag 'nfs-rdma-4.5-1' of git://git.linux-nfs.org/projects/anna/nfs-rdma

2016-02-19T01:22:03Z

NFS: NFSoRDMA Client Bugfix This patch fixes a bug where NFS v4.1 callbacks were returning RPC_GARBAGE_ARGS to the server. Signed-off-by: Anna Schumaker

xprtrdma: rpcrdma_bc_receive_call() should init rq_private_buf.len

2016-02-17T15:23:52Z

Some NFSv4.1 OPEN requests were hanging waiting for the NFS server to finish recalling delegations. Turns out that each NFSv4.1 CB request on RDMA gets a GARBAGE_ARGS reply from the Linux client. Commit 756b9b37cfb2e3dc added a line in bc_svc_process that overwrites the incoming rq_rcv_buf's length with the value in rq_private_buf.len. But rpcrdma_bc_receive_call() does not invoke xprt_complete_bc_request(), thus rq_private_buf.len is not initialized. svc_process_common() is invoked with a zero-length RPC message, and fails. Fixes: 756b9b37cfb2e3dc ('SUNRPC: Fix callback channel') Signed-off-by: Chuck Lever Signed-off-by: Anna Schumaker

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

2016-01-24T02:45:06Z

Pull rdma updates from Doug Ledford: "Initial roundup of 4.5 merge window patches - Remove usage of ib_query_device and instead store attributes in ib_device struct - Move iopoll out of block and into lib, rename to irqpoll, and use in several places in the rdma stack as our new completion queue polling library mechanism. Update the other block drivers that already used iopoll to use the new mechanism too. - Replace the per-entry GID table locks with a single GID table lock - IPoIB multicast cleanup - Cleanups to the IB MR facility - Add support for 64bit extended IB counters - Fix for netlink oops while parsing RDMA nl messages - RoCEv2 support for the core IB code - mlx4 RoCEv2 support - mlx5 RoCEv2 support - Cross Channel support for mlx5 - Timestamp support for mlx5 - Atomic support for mlx5 - Raw QP support for mlx5 - MAINTAINERS update for mlx4/mlx5 - Misc ocrdma, qib, nes, usNIC, cxgb3, cxgb4, mlx4, mlx5 updates - Add support for remote invalidate to the iSER driver (pushed through the RDMA tree due to dependencies, acknowledged by nab) - Update to NFSoRDMA (pushed through the RDMA tree due to dependencies, acknowledged by Bruce)" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (169 commits) IB/mlx5: Unify CQ create flags check IB/mlx5: Expose Raw Packet QP to user space consumers {IB, net}/mlx5: Move the modify QP operation table to mlx5_ib IB/mlx5: Support setting Ethernet priority for Raw Packet QPs IB/mlx5: Add Raw Packet QP query functionality IB/mlx5: Add create and destroy functionality for Raw Packet QP IB/mlx5: Refactor mlx5_ib_qp to accommodate other QP types IB/mlx5: Allocate a Transport Domain for each ucontext net/mlx5_core: Warn on unsupported events of QP/RQ/SQ net/mlx5_core: Add RQ and SQ event handling net/mlx5_core: Export transport objects IB/mlx5: Expose CQE version to user-space IB/mlx5: Add CQE version 1 support to user QPs and SRQs IB/mlx5: Fix data validation in mlx5_ib_alloc_ucontext IB/sa: Fix netlink local service GFP crash IB/srpt: Remove redundant wc array IB/qib: Improve ipoib UD performance IB/mlx4: Advertise RoCE v2 support IB/mlx4: Create and use another QP1 for RoCEv2 IB/mlx4: Enable send of RoCE QP1 packets with IP/UDP headers ...

svc_rdma: use local_dma_lkey

2016-01-19T20:30:48Z

We now alwasy have a per-PD local_dma_lkey available. Make use of that fact in svc_rdma and stop registering our own MR. Signed-off-by: Christoph Hellwig Reviewed-by: Sagi Grimberg Reviewed-by: Jason Gunthorpe Reviewed-by: Chuck Lever Reviewed-by: Steve Wise Acked-by: J. Bruce Fields Signed-off-by: Doug Ledford

svcrdma: Add class for RDMA backwards direction transport

2016-01-19T20:30:48Z

To support the server-side of an NFSv4.1 backchannel on RDMA connections, add a transport class that enables backward direction messages on an existing forward channel connection. Signed-off-by: Chuck Lever Acked-by: Bruce Fields Signed-off-by: Doug Ledford

svcrdma: Define maximum number of backchannel requests

2016-01-19T20:30:48Z

Extra resources for handling backchannel requests have to be pre-allocated when a transport instance is created. Set up additional fields in svcxprt_rdma to track these resources. The max_requests fields are elements of the RPC-over-RDMA protocol, so they should be u32. To ensure that unsigned arithmetic is used everywhere, some other fields in the svcxprt_rdma struct are updated. Signed-off-by: Chuck Lever Acked-by: Bruce Fields Signed-off-by: Doug Ledford

svcrdma: Make map_xdr non-static

2016-01-19T20:30:48Z

Pre-requisite to use map_xdr in the backchannel code. Signed-off-by: Chuck Lever Acked-by: Bruce Fields Signed-off-by: Doug Ledford

svcrdma: Remove last two __GFP_NOFAIL call sites

2016-01-19T20:30:48Z

Clean up. These functions can otherwise fail, so check for page allocation failures too. Signed-off-by: Chuck Lever Acked-by: Bruce Fields Signed-off-by: Doug Ledford

svcrdma: Add gfp flags to svc_rdma_post_recv()

2016-01-19T20:30:48Z

svc_rdma_post_recv() allocates pages for receive buffers on-demand. It uses GFP_KERNEL so the allocator tries hard, and may sleep. But I'm about to add a call to svc_rdma_post_recv() from a function that may not sleep. Since all svc_rdma_post_recv() call sites can tolerate its failure, allow it to fail if the page allocator returns nothing. Longer term, receive buffers, being a finite resource per-connection, should be pre-allocated and re-used. Signed-off-by: Chuck Lever Acked-by: Bruce Fields Signed-off-by: Doug Ledford

svcrdma: Remove unused req_map and ctxt kmem_caches

2016-01-19T20:30:48Z

Clean up. Signed-off-by: Chuck Lever Acked-by: Bruce Fields Signed-off-by: Doug Ledford